#7070th of 102 in Backends, databases and hosting
fission
Kubernetes-native serverless functions with a warm container pool
- Stars
- 8.9k
- License
- Apache-2.0
- Last commit
- Nov 2026
- Last release
- Jun 2026
- Language
- Go
8,822 on 21 Apr 20268,944 on 10 Nov 2026
From GitHub's daily star counts.
Checked on GitHub.
Overview
Fission runs functions on a Kubernetes cluster from source code alone, using language-specific environments (NodeJS, Python, Ruby, Go, PHP, Bash, any Linux executable). Functions are triggered by HTTP requests, message queues or schedules and scale automatically. A pool of warm containers with a dynamic loader gives cold starts of about 100 ms. It is a general serverless framework with no AI-specific features.
Who it is for: Teams on Kubernetes who want to deploy functions without managing containers
Strengths
- Warm container pool gives cold starts of about 100 ms, per the README
- Triggers include HTTP, message queues and scheduled tasks
- Environments cover NodeJS, Python, Ruby, Go, PHP, Bash and Linux executables
- Reuses existing Kubernetes monitoring and log aggregation tooling
Weaknesses
- Requires an existing Kubernetes cluster; no standalone mode described
- Not AI-specific: no model serving, agent or LLM features
- Languages beyond the stock set need a custom environment image
- No Docker or Compose quick start in the repository
What it needs
- no GPU
- Needs Kubernetes
Quick answers
Is fission open source?
Yes. Its code is on GitHub under the Apache-2.0 license.
Can you run fission with Docker?
Yes. Its repository has a Docker setup: a Dockerfile, a Compose file or a published image.
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